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Apparatus and method for the processing of operating data of an electric motor

  • US 4,839,830 A
  • Filed: 03/09/1987
  • Issued: 06/13/1989
  • Est. Priority Date: 03/10/1986
  • Status: Expired due to Fees
First Claim
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1. Apparatus for processing operating stress data associated with a particular electric motor connected to a power network by an ON/OFF switch, the data processing apparatus comprising:

  • (a) a processing unit for processing data;

    (b) a program memory storing operating programs of the process unit;

    (c) a data memory storing the operating stress data associated with the particular electric motor, time of occurrence data of the operating stress data, and predetermined criteria data for the particular electric motor, the data memory of a size such that operating stress data occurring over at least a portion of the life and duration of use of the motor may be stored;

    (d) a real time clock connected to the processing unit for providing time of occurrence data;

    (e) a first bidirectional bus system connecting the processing unit with the program memory and the data memory;

    (f) means coupled to the motor for sensing a quantity related to motor operating stress as motor operating stress data, and for providing the operating stress as motor operating stress data, and for providing the operating stress data to the processing unit; and

    (g) a power supply coupled to a power feed line for the associated particular electric motor from the power network for providing power to the processing unit, the real time clock, the program memory and the data memory,the processing unit comparing the motor operating stress data with the predetermined criteria data and storing the motor operating stress data and the time of occurrence data in the data memory as a data collection when the motor operating stress data exceeds the predetermined criteria data.

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